CN219254655U

CN219254655U - Welding concentric mechanism

Info

Publication number: CN219254655U
Application number: CN202320278369.3U
Authority: CN
Inventors: 聂宏运; 牛宇武; 李欠平
Original assignee: Luoyang Hasman Mechanical Equipment Co ltd
Current assignee: Luoyang Hasman Mechanical Equipment Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-27
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a welding concentric mechanism and the technical field of flange pipe welding, comprising a fixed shaft, a threaded sleeve and two groups of support components which can synchronously stretch and retract through the rotation of the threaded sleeve, wherein the threaded sleeve is rotationally arranged at the outer side of the fixed shaft, the surfaces of the outer sides of the two ends of the threaded sleeve are provided with threaded sections, the two groups of support components which can synchronously stretch and retract are arranged, so that a pipe fitting and a flange can be respectively sleeved on the two groups of support components to synchronously stretch and retract so as to realize the welding with high concentricity, one section of the inner side of the pipe fitting, which is close to the flange, is sleeved on the support components, can perform the concentric welding of flanges on the pipe fitting with longer length, has no limit on the length of the pipe fitting, and is suitable for the concentric welding of flange pipes with different lengths.

Description

Welding concentric mechanism

Technical Field

The utility model relates to the technical field of flange pipe welding, in particular to a welding concentric mechanism.

Background

The connection between the pipe fittings usually adopts flange connection, namely two pipes, pipe fittings or equipment are respectively fixed on one flange plate, a flange pad is added between the two flange plates, and the two flange plates are fastened together by butterfly bolts to finish the connection. The flange is divided into a threaded connection (wire connection) flange and a welding flange. The low pressure small diameter is connected with flange by wire, and the high pressure and the low pressure large diameter are welded flanges.

When the flange is welded with the pipe fitting, concentricity of the flange needs to be ensured. The utility model patent application No. 202220251062.X discloses a pipe fitting double-end flange welding positioning tool, which has the working principle that clamping blocks are clamped on the inner wall of a flange through controlling an electric three-jaw chuck, the pipe fitting is clamped through a centering chuck, two flange positioning mechanisms with flanges are clamped through an electric guide rail and are mutually close, the double-end flange is clamped and fixed at two ends of the pipe fitting, and the butt-positioned pipe fitting and the flanges are simply fixed through spot welding by a welding gun. However, when the centering chuck clamps the pipe fitting, no matter the pipe fitting is clamped at the inner side or the outer side of the pipe fitting, one end of the pipe fitting can be clamped, the other end of the pipe fitting is connected with a corresponding flange and welded, the length of the pipe fitting which can be welded depends on the maximum distance between the centering chuck and the electric three-jaw chuck, the welding limit of the pipe fitting is larger, and the pipe fitting can not be suitable for welding of flange pipes with longer lengths; the centering chuck can only keep away from the one end of waiting to weld the flange to carry out the centre gripping of short distance fixed on the pipe fitting, if the pipe fitting is longer, can appear certain slope under the condition that the pipe fitting other end is not fixed, leads to unable and the flange to accomplish the connection of high concentricity, influences the whole quality of flange pipe.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides a concentric welding mechanism which can perform concentric welding of flanges on a pipe with a longer length, is not limited on the length of the pipe, is suitable for concentric welding of flange pipes with different lengths, avoids inclination due to gravity caused by longer unsupported parts, can improve concentricity of the pipe and the flange during welding, improves integral quality of the flange pipe, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a concentric mechanism of welding, includes the fixed axle, screw sleeve and two sets of support assembly that can stretch out and draw back in step through screw sleeve's rotation, screw sleeve rotates the outside that sets up at the fixed axle, screw sleeve's both ends outside surface is provided with the screw section.

As a preferred technical scheme of the utility model, one group of support assemblies comprises a fixing frame, wherein the fixing frame is fixedly arranged at the end part of the fixing shaft; the thread rack is in threaded connection with a thread section, close to one end of the fixing frame, on the thread sleeve; the two bottom ends of each shear plate are respectively hinged with the threaded frame and the fixing frame, and the two top ends of each shear plate are movably provided with a supporting top plate; another set of support assemblies includes: the thread rack is in threaded connection with a thread section of one end, far away from the fixing frame, of the thread sleeve; the rotating frame is rotatably arranged outside the threaded sleeve and between the two threaded frames; the two bottom ends of each shear plate are respectively hinged with the threaded frame and the rotating frame, and the two top ends of each shear plate are movably provided with a supporting top plate.

As a preferable technical scheme of the utility model, the outer side surface of the end part of the threaded sleeve is fixedly provided with a fixed ring, and the outer periphery side of the fixed ring is uniformly provided with a plurality of handles.

As a preferable technical scheme of the utility model, the lifting device further comprises a base, wherein the upper surface of the base is provided with a lifting column, the side surface of the lifting column is provided with a fixing bolt for fixing the height of the lifting column, the top end of the lifting column is provided with a clamping block, one end of the fixing shaft is a fixing end, and the fixing end is clamped in a clamping groove formed in the clamping block.

Compared with the prior art, the utility model has the beneficial effects that: by arranging two groups of supporting components capable of synchronously telescoping, the pipe fitting and the flange can be respectively sleeved on the two groups of supporting components, synchronous telescoping is realized, and then high concentricity welding is achieved, one section of the inner side of the pipe fitting, which is close to the flange, is sleeved on the supporting components, so that the pipe fitting with longer length can be subjected to flange concentric welding, the length of the pipe fitting is not limited, and the pipe fitting is suitable for flange pipe concentric welding with different lengths; the length of the supporting component is set to be more than 60 centimeters, the supporting component can be integrally supported on the inner wall of the pipe fitting, the supporting length is long, the supported part is connected with the flange and is synchronously centered, the phenomenon that the pipe fitting is inclined due to gravity because of the long unsupported part is avoided, the concentricity of the pipe fitting and the flange during welding can be improved, and the integral quality of the flange pipe is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic view of a partial structure of the present utility model;

fig. 4 is a schematic structural diagram of another embodiment of the present utility model.

In the figure: 1 fixed shaft, 2 screw sleeve, 3 fixed end, 4 mount, 5 screw frame, 6 rotating frame, 7 scissors shaped plate, 8 supporting top plate, 9 blotter, 10 fixed ring, 11 handle, 12 non-slip mat, 13 base, 14 lifting column, 15 fixing bolt, 16 fixture block.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a concentric mechanism of welding, includes fixed axle 1, screw sleeve 2 and two sets of support assembly that can stretch out and draw back in step through the rotation of screw sleeve 2, screw sleeve 2 rotates the outside that sets up at fixed axle 1, and screw sleeve 2's both ends outside surface is provided with the screw section.

Specifically, the structures of the two groups of supporting components are approximately the same, each supporting component is provided with a scissors board 7 formed by two rotating boards hinged to the middle part and a supporting top board 8 movably arranged at the top end of the scissors board 7, one rotating board top end of the scissors board 7 is hinged to one end of the supporting top board 8, the other rotating board top end is in sliding hinge connection with the other end of the supporting top board 8, namely, a sliding groove is formed in the other end of the supporting top board 8, a sliding block is arranged in the sliding groove in a sliding manner, and the sliding block is hinged to the corresponding rotating board top end, so that the scissors board 7 and the supporting top board 8 can stretch in a scissor mode. In addition, one group of supporting components further comprises a fixing frame 4 and a threaded frame 5, the fixing frame 4 is fixedly arranged at the end part of the fixing shaft 1, the threaded frame 5 is in threaded connection with a threaded section of one end, close to the fixing frame 4, of the threaded sleeve 2, the threaded frame 5 and the fixing frame 4 are identical in shape, the threaded frame 4 is arranged at the inner side of the threaded frame 5, three groups of mounting plates are arranged at the outer peripheral sides of the threaded frame 5 and the fixing frame 4, a shear plate 7 is hinged on each mounting plate, and when the threaded frame 5 moves linearly on the threaded sleeve 2, the shear plate 7 drives the supporting top plate 8 to stretch; the other group of supporting components further comprises a rotating frame 6 and another threaded frame 5, the threaded frame 5 is in threaded connection with a threaded section of one end, far away from the fixed frame 4, of the threaded sleeve 2, the rotating frame 6 is rotatably arranged outside the threaded sleeve 2 and between the two threaded frames 5, three groups of mounting plates are arranged on the outer periphery sides of the rotating frame 6 and the threaded frames 5, a shear plate 7 is hinged to each mounting plate, and when the threaded frames 5 linearly move on the threaded sleeve 2, the shear plates 7 drive a supporting top plate 8 to stretch out and draw back.

The shapes of the rotating frame 6, the threaded frame 5 and the fixing frame 4 are the same, and the difference is that the fixing frame 4 is fixedly arranged at the end part of the fixing shaft 1, the two threaded frames 5 are respectively in threaded connection with two sections of threads of the threaded sleeve 2, the rotating frame 6 is rotatably arranged at the position between the two sections of threads of the threaded sleeve 2, and two limiting rings fixed on the threaded sleeve 2 are further arranged at the two sides of the rotating frame 6, so that the rotating frame 6 can only rotate but not move, one ends of the two groups of supporting components are fixed, and the other ends of the two groups of supporting components can move along the axial direction of the two groups of supporting components through the rotation of the threaded sleeve 2, so that the shear plates 7 in the two supporting components are driven to synchronously stretch out and draw back, and the high concentricity of the flange and the pipe fitting is achieved, and the welding quality and the integral quality of the flange pipe are improved.

When centering pipe fitting and flange, the flange cup joints on one of them supporting component, the pipe fitting then cup joints on another supporting component, and its and flange junction face contact flange, make fixed axle 1 fixed difference, rotate screw sleeve 2, screw sleeve 2 rotates around fixed axle 1, make two screw frames 5 follow the direction synchronous motion of mount 4 on the axis, scissors board 7 drives supporting roof 8 outside and removes, two sets of supporting components synchronous outward expansion, when expanding to can not rotate screw sleeve 2 any more, can fully support flange and pipe fitting, because screw frame 5 is synchronous motion all the time, scissors board 7 is synchronous motion also, then flange and pipe fitting centre of a circle that two sets of supporting components fully supported all are fixed in the axis, have higher concentricity, afterwards, can fix flange and pipe fitting spot welding, guarantee its concentricity, improve the whole quality of flange pipe.

In the preferred embodiment, the cushion pad 9 is glued on the outer side surface of the supporting top plate 8, the cushion pad 9 can be made of wear-resistant rubber, the rubber has certain elasticity, the cushion effect can be achieved in the supporting process, the flange and the inner wall of the pipe fitting are protected from being scratched, meanwhile, the anti-skid effect can be achieved in the supporting process, and the welding process is stable.

In the preferred embodiment, the fixing ring 10 is fixedly arranged on the outer surface of the end part of the threaded sleeve 2, three screw holes are uniformly formed in the outer peripheral side of the fixing ring 10, three handles 11 are connected in the screw holes in a threaded manner, and after the fixing shaft 1 is fixed, the threaded sleeve 2 is operated to rotate through the three handles 11, so that the operation is simpler and more convenient.

The fixed ring 10 is arranged at one end far away from the fixed frame 4, the flange is sleeved on the support component close to one side of the fixed ring 10 during centering, and the pipe fitting is sleeved on the support component close to one side of the fixed frame 4, so that the part of the pipe fitting which is as long as possible is contacted with the support component, the stability of the centering process is ensured, and the situation that the part which is not connected with the support component is overlong and too heavy to incline during centering is avoided.

Optionally, an anti-slip pad 12 is glued on the outer side surface of the handle 11, and the anti-slip pad 12 is a sponge rubber pad, which has an anti-slip function and comfortable hand feeling.

The present utility model also provides another embodiment, please refer to fig. 4:

the present embodiment is substantially the same as the previous embodiment, except that it further includes a base 13, the upper surface of the base 13 is provided with a lifting column 14, the lifting column 14 is formed by a fixed cylinder and a sliding column, the fixed cylinder is fixedly arranged on the base 13, the sliding column is slidably arranged in the fixed cylinder, the side surface of the lifting column 14 is provided with a fixing bolt 15 for fixing the height of the lifting column 14, and the end of the fixing bolt 15 penetrates into the inside of the fixed cylinder and is connected with the sliding column, thereby fixing the position and the height of the sliding column; the fixture block 16 is installed on the top of lift post 14, the one end of fixed axle 1 is stiff end 3, and stiff end 3 joint is in the draw-in groove of seting up on fixture block 16, and the cross-sectional shape of stiff end 3 can be rectangle or regular hexagon, and the cross-sectional shape of draw-in groove then is the rectangle, and the stiff end joint is rotatable after in the draw-in groove, and the other end of pipe fitting then places on corresponding platform when the centering, and lift post 14 can be according to the external diameter length of pipe fitting i.e. its height of placing the centre of a circle on the platform and come the height of adjusting oneself to make whole concentric mechanism keep the level, guarantee welded concentricity.

The non-disclosed parts of the utility model are all prior art, and the specific structure, materials and working principle thereof are not described in detail. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A welding concentric mechanism, characterized in that: comprising

A fixed shaft (1);

the threaded sleeve (2) is rotatably arranged on the outer side of the fixed shaft (1), and threaded sections are arranged on the outer side surfaces of two ends of the threaded sleeve (2);

the two groups of support components can synchronously stretch out and draw back through the rotation of the threaded sleeve (2).

2. A welding concentric mechanism as defined in claim 1, wherein: wherein the group of support components comprises

The fixing frame (4), the fixing frame (4) is fixedly arranged at the end part of the fixed shaft (1);

the thread rack (5) is in threaded connection with a thread section, close to one end of the fixing frame (4), on the thread sleeve (2);

the two bottom ends of each shear plate (7) are respectively hinged with the threaded frame (5) and the fixed frame (4), and the two top ends of each shear plate (7) are movably provided with a supporting top plate (8); another set of support assemblies includes:

the thread rack (5) is in threaded connection with a thread section of one end, far away from the fixed frame (4), of the thread sleeve (2);

the rotating frame (6) is rotatably arranged outside the threaded sleeve (2) and between the two threaded frames (5);

the two bottom ends of each shear plate (7) are respectively hinged with the threaded frame (5) and the rotating frame (6), and the two top ends of each shear plate (7) are movably provided with a supporting top plate (8).

3. A welding concentric mechanism as defined in claim 2, wherein: the outer side surface of the supporting top plate (8) is glued with a buffer pad (9).

4. A welding concentric mechanism as defined in claim 1, wherein: the screw thread sleeve (2) is characterized in that a fixing ring (10) is fixedly arranged on the outer side surface of the end part of the screw thread sleeve (2), and a plurality of handles (11) are uniformly arranged on the outer periphery side of the fixing ring (10).

5. A welding concentric mechanism as defined in claim 4, wherein: the outer side surface of the handle (11) is glued with an anti-slip pad (12).

6. A welding concentric mechanism as defined in claim 1, wherein: still include base (13), the upper surface of base (13) is provided with lift post (14), and the side surface of lift post (14) is provided with fixing bolt (15) that are used for fixed lift post (14) height, fixture block (16) are installed on the top of lift post (14), the one end of fixed axle (1) is stiff end (3), in the draw-in groove of seting up on fixture block (16) stiff end (3) joint.